Strip feeding device



Aug. 5, 1958 P. e. STIMSQN ET AL 2,846,044

STRIP FEEDING DEVICE Filed Dec. 14, 1955 5 Sheets-Sheet 1 INVENTORSPERCY 6 ST/MSO/V JOH/V 7. DAVIDSON mm m MSON ET AL P. G. ST!

Aug. 5, 1958 STRIP FEEDING DEVICE 5 Sheets-Sheet 2 Filed Dec. 14, 1955INVENTORS a ST/MSOA/ JOHN T DAV/050A Aug. 5, 1958 P. G. STIMSON ET AL2,846,044

STRIP FEEDING DEVICE I Filed Dec. 14, 1955 5 Sheets-Sheet 3 INVENTORSPERCY G. ST/MSO/V JOHN Z' DAV/050M BYBW m i P. G. STIMSON ETAL STRIPFEEDING DEVICE Aug. 5, 1958 2,846,044

Filed Dec. 14, 1955 5 Sheets-Sheet 4 INVENTORS PERCY G; ST/MSON JOHN 7.DAVIDSON rmmm United States Patent STRIP FEEDING DEVICE Percy G. Stimsonand John T. Davidson, Dayton, Ohio, assignors to The Standard RegisterCompany, Dayton, Ohio, a corporation of Ohio Application December 14,1955, Serial No. 553,048 13 Claims. (Cl. 197-126) This invention relatesto typewriting and like machines operable upon a record strip comprisingseries connected record forms, and more particularly to such a machinein which the platen roll bodily is shiftable from a typing to anon-typing position for a purpose useful in the operation of themachine. Machines of this type, commonly known as lift platen machines,are generally used in connection with the use of cut, sheet transfermaterial interleaved with superposed continuous record strips.

In such use of cut transfer material, sheets of such material areanchored at one of their ends to a carrier located to the rear of themachine and movable toward and from the machine in advancing andretracting movements. In the inscribing of a form, the carbon ortransfer sheet material advances unitarily with the record strips in theline by line movement of a record form over the platen roll. Afterinscription of one form, and prior to the start of inscribing the nextsucceeding form, the platen roll is bodily lifted from its normal typingposition in a manner to free the interleaved carbon sheets forretracting motion. The described carrier then is moved in a retractingdirection and the carbon sheets are withdrawn relative to the recordstrips to an operative interleaved position with respect to the nextsucceeding set of forms. Return of the platen roll to its normalposition restores the parts for the inscribing of such next succeedingform, with the transfer material advancing with the inscribed form, asbefore.

The object of the invention is to simplify the construction as well asthe means and mode of operation of strip feeding devices, whereby suchdevices may not only be economically manufactured, but will be moreefl'icient and satisfactory in use, adaptable to a wide variety ofapplications, and be unlikely to get out of repair.

A further object of the invention is to combine the operations ofshifting the platen roll and of retracting the carbon carrier undercommon control.

Another object of the invention is to utilize the eject lever of themachine, by which the record strip is advanced in a sweep feed actionfrom the last inscribed line of one record form to the first writingline of the next succeeding form, as a control in the adjustment of thecarbon sheet material as above described.

A further object of the invention is to achieve a substantiallyautomatic retraction of the carbon sheet material in timed relation withadvance of the strip material and the lifting of the platen roll.

Still another object of the invention is to accomplish in a singlestroke of the eject lever the sweep feeding of the record stripmaterial, the lifting of the platen for retraction of the carbonmaterial, and retraction of the carbon material.

A still further object of the invention is to combine in a novel andeffective manner, and under a single control, sweep feeding or linefinding mechanism in a typewriting or like machine with mechanical meansfor retracting cut carbon sheet material for successive use of the samecarbon material by successive sets of forms.

A further object of the invention is to provide a strip feeding devicepossessing the advantageous structural features, the inherentmeritorious characteristics and the mode of operation herein mentioned.

With the above primary and other incidental objects in view as will morefully appear in the specification, the invention intended to beprotected by Letters Patent consists of the features of construction,the parts and combinations thereof, and the mode of operation ashereinafter described or illustrated in the accompanying drawings, ortheir equivalents.

Referring to the accompanying drawings, wherein is shown one butobviously not necessarily the only form of embodiment of the invention,

Fig. 1 is a view in perspective of a carriage and associated mechanism,in accordance with the illustrated embodiment of the invention, of atypewriting machine, the machine proper being shown in broken lines;

Fig. 2 is a detail view in side elevation of the carriage assembly, someparts being broken away;

Fig. 3 is a detail view in front elevation of one end of the carriageassembly;

Fig. 4 is a view similar to Fig. 2, with some parts omitted, showing theplaten roll latched in its normal typing position;

Fig. 5 is a view similar to Figs. 2 and 4, showing the parts as theyappear after the eject lever has been moved to sweep feed the recordstrip material and just prior to its movement to lift the platen;

Fig. 6 is a view similar to Fig. 5, showing the parts as they appearwith the platen roll in lifted position;

Fig. 7 is a fragmentary view in side elevation of an eject lever inaccordance with a modified concept of the construction thereof in whichthe lever is made of two relatively movable parts;

Fig. 8 is a view similar to Fig. 7, showing one part of the leveradjusted relatively to the other;

Fig. 9 is a detail view in side elevation, -with some parts broken away,of the carbon sheet shifter mechanism;

Fig. 10 is a view in cross section taken substantially long the line10-10 of Fig. 9; and

Fig. 11 is a wiring diagram showing an arrangement of switches forcontrolling the motor which drives the carbon shifting mechanism.

Like parts are indicated by similar characters of reference throughoutthe several views.

Referring to the drawings, a typewriting machine in accordance with theillustrated embodiments of the invention comprises a frame 15 supportinga transversely movable carriage assembly 16, a principal part of whichis a platen roll 17. At the rear of the typewriter is a stand or rack 18over which superposed strips 19 of record material are advanced to thetypewriter from a supply pack 21. Mounted on the rack or stand 18 forreciprocating motion toward and from the rear of the typewriter is acarbon carrier 22 made up of superposed spaced apart plate elements 23,to individual ones of which are attached sheets of carbon or transfermaterial 20 interleaved between the record strips.

The record strips 19 extend through the carbon carrier 22, separated bythe plates 23, and the record strip assembly comprising the recordstrips and carbon sheets extends forwardly to the carriage 16 where theleading end thereof passes under and around the. platen 17. The carbonmaterial is bound to the record strips by its passage about the platen17 sothat there is a unitary advance of the interleaved transfermaterial with advance of the record strip material until inscription ofa set of 3. forms is completed. Thereupon apparatus in accordance withthe instant invention comes into play to elevate the platen, enablingthe transfer material to be retracted, as by means of the push arm 24attached to the carrier 22 or by automatic means later to be described.

The platen roll 17 is journaled in a pair of swinging arms 25, of whichthere is one at each end of the platen roll. The swinging arms arepivoted to short links 26 which are in turn pivotally connected tobrackets 27. constituting extensions of side plates 28 of the carriage16. The side plates are joined together by an underlying channel member29. To guide the platen in its swinging movement, slotted members 31 arefastened to the side plates 28 and have formed therein arcuate slots 32each receiving a stud 33 on a respective arm 25. Referring to Fig. 3,the platen 17 includes a shaft 34 which is secured to one of the arms bymeans of a sleeve 35. An extension 36 of the shaft 34 extends throughand beyond the sleeve and has a knob 37 thereon comprising a part of thevariable mechanism by which the platen may be initially rotatedindependently of the line spacing mechanism to bring the first writingline on the leading form of a record strip assembly into position at thewriting line. The line space mechanism includes a ratchet 38 on theplaten shaft extension 36 intermittently operated by a pawl (not shown)in a conventional manner to advance the platen in a rotary sense aselected distance corresponding to the spacing of a selected number ofthe teeth on the ratchet 38.

Rotation of the platen 17 effects through conventional mechanisms acorresponding advance of the record strip assembly over the surface ofthe platen. Successive lines of a printed form thus are presented at theWriting line in response to the line spacing operations. In the presentinstance, the feeding mechanism is a positive pin feed achieved throughmarginal perforations 39 in the record strips 19 by rotary feedingdevices 41 which are mounted upon or form an integral part of the platen17 and carry projecting pins 42 capable of entering in and withdrawingfrom registering perforations 39 in superposed record forms. The carbonsheet material 20, as indicated in Fig. l, is made relatively narrow inorder not to interfere with the action of the feeding pins in enteringand withdrawing from the perforations in the margins of the recordstrips.

It is also proposed to rotate the platen and thereby to advance therecord strip material by a sweep feed principle of operation in whichthe record strip material is advanced in a single continuous motion,after the last entry has been made on one set of forms, to bring thefirst writing line of the next succeed-ing set of forms to writingposition. This is accomplished by means including a sweep feed or ejectlever 43 having a handle 44 at one end thereof for manual manipulation.The other end of the lever 43 is pivotally connected to a stub shaft 45projecting laterally from a plate 46 arranged in parallel nearbyrelation to one of the arms 25 and stationarily secured thereto by meansincluding the stud 33 and other studs 47 and 48. A spring 49 is attachedto the lever 43 between its ends and is anchored to the plate 46 in amanner to hold the lever 43 normally in the position shown in Fig. 2.Also intermediate its ends the lever 43 mounts a pawl 51 urged by aspring 52 into engagement with the periphery of a disc or drive plate 53also rotatably mounted on the stub shaft 45 and formed withcircumferentially spaced apart projecting abutments or teeth 54. In sideby side relation to the drive plate 53, and suitably secured thereto, isa gear 55 meshing with and driving another gear 56 rotatably mounted onanother stub shaft 57 set in the side of the plate 46. Rotating with thegear 56 is a gear 58 meshing with and driving a gear 59 on the platenshaft extension 36.

In the normal or home position of the lever 43, the pawl 51 is held outof engagement with the drive plate 53 by virtue of a projection 61 onthe side of the plate 46 about which the pawl rocks as the lever 43 isreturned to home position by the spring 49. Immediately upon advance ofthe lever 43, which is effected by a rearwardly pushing motion by theoperator from the position shown in Fig. 1, the pawl 51 reengages thesurface of the plate 53 and at an earlier or later point in the movementof the lever, depending upon the number of line spacing operations thathave taken place, the pawl 51 engages a tooth 54 on the plate 53.Continued motion of the lever 43 accordingly results in rotation of thedrive plate 53 and therethrough rotation of the platen and advance ofthe record strip material. This motion continues until the tooth engagedby the pawl limits against a stop 62. The latter is in the form of anarm pivotally connected at its one end to a stud 63 on the plate 46 andhaving a noselike formation at its other end which overlies the driveplate 53. A spring 64 urges the stop arm 62 downwardly in position to beengaged by a tooth 54 on the plate 53. Also on the arm 62 is a dependentlug portion 65 engageable by a cam 66 secured to the side of the driveplate 53 for rotary motion therewith. As indicated in Fig. 2, the partsare so positioned that a high point on the cam 66 normally engages thelug portion 65 to hold the stop arm 62 elevated out of the path of theteeth on the drive plate 53. Early in the motion of the lever 43 awayfrom home position, however, the high part of cam 66 passes from beneaththe lug 65, allowing spring 64 to move the stop arm downward in positionto be engaged by and to limit the advancing motion of the approachingtooth 54. Return of the lever 43 to home position will, of course,restore the parts to the normal position shown, releasing the driveplate for a subsequent operation.

It will be understood that the parts are constructed and arranged for apredetermined total advance of the record strip material. Thus, thematerial may move differing distances upon actuation of the lever 43depending upon the number of entries made upon the record form inwriting position. The extent of permitted motion, however, always isonly that necessary to bring the first writing line of the nextsucceeding form into imprinting position at the platen. Through the useof diiferent gear ratios, the permitted motion of the lever 43 may, ofcourse, be caused to produce different extents of advance of the recordstrip material.

Lifting or elevation of the platen roll for adjustment of the carbonsheets is effected through a lever 67 pivotally mounted at its one endon a stud 68 extending from the side of one of the arms 25. The otherend of the lever 67 is formed as a finger piece 69 for direct lifting ofthe platen. The principal means for lifting the platen is, however, theeject lever 43, as will hereinafter more clearly appear. Set in the sideof the lever 67 is a stud 71. The stud 71 engages the underside of onearm 72 of a three arm bell crank lever 73. Another arm 74 thereof isformed as a latch and normally engages under an out-turned car 75 on alatch plate 76 stationarily mounted on one of the carriage end plates28. The third arm 77 of the lever 73 is formed as an abutment engageableby a latch arm 78 on a lever 79 pivotally mounted on the side of the arm25. Another arm 81 of the lever 79 extends in parallel adjacent relationto the latch arm 74 of the lever 73 and normally overlies a stud 82thereon in a manner to hold the latch arm 78 out of cooperative relationwith the abutment arm 77 of the lever 73. A spring 83 urges the latchlever 79 downward or in a clockwise direction as seen in Fig. 4, andanother spring 84 urges the lever 73 in a similar direction. As aresult, the arm 72 constantly engages stud 71 and arm 74 is engagedunder the stationary ear 75. By virtue of the latter engagement, theplaten roll is thus normally latched in its lowered or normal position.

By lifting up on the lever 67, however, the bell crank lever 73 may becaused, through the stud 71, to rock in a counterclockwise direction tofree the arm 74 from the latch plate 76. Continued lifting motion of thelever 67 causes thelatch arm 74 of the lever 73 to limit against thestud 48 extending between the arm 25 and the plate 46. Additional motionof the lever 67 relatively to the plate 46 and arm 25 thus is preventedand a continued lifting force applied to the lever is effective to raisethe assembly comprising the arms 25, the platen roll and the plate 46and parts mounted thereon. The latch lever 79 is released by thecounterclockwise movement of the bell crank lever 73 whereby the arm 78thereof is permitted to descend to a position in front of the abutmentarm 77 of the lever 73. The bell crank lever 73 thus is held in adisengaged position relatively to the latch plate 76. Release of thelatch lever 79 is accomplished during the return motion of the platenassembly to its normal position, the lower arm 81 of the lever beingpermitted to engage the turned over portion 75 of the latch plate 76 toraise the arm 78 out of engagement with the abutment arm 77. Thisconstruction obviates the need for tensioning the springs 84 whenlowering the platen.

In further accordance with the instant concept of the invention, thereis mounted on the stud 68 another lever 85 having a finger portion 86extending in underlying relation to the stud 71 on the lever 67 andhaving an upstanding arm 87 in parallel relation to the eject lever 43.On the outer free end of the arm 87 is mounted a laterally projectingeccentrically adjustable sleeve 88 which is engaged by the lever 43 atabout the same time in the travel of the lever that a tooth 54 on thedrive plate 53 reaches contact with the stop arm 62. Thus, as the lever43 reaches its normal limit of movement in which it has completed asweep feed operation, it engages the eccentric sleeve 88 on the lever85. If the operator now continues to push the lever 43 toward the rearof the machine the applied force is resolved into a rocking and liftingmotion of the arms 25 and of the platen 17 carried therebetween.Movement of the parts from the position substantially as shown in Fig. 5to the position substantially as shown in Fig. 6 is effected. Returnmotion of the eject lever results initially in a lowering of the platenassembly and finally in a restoring of the lever and associated parts tothe position as shown in Fig. 2.

Sweep feeding of the record strip material and elevation of the platenassembly for adjustment of the carbon thus are accomplished in onesubstantially continuous actuating stroke of the eject lever 43. Withthe platen assembly so raised, the carbon adjustment may, as beforedescribed, be manually adjusted or retracted through the arm 24.

In accordance with a further concept of the instant invention, automaticmeans are provided for retracting the carbon, the operation of which isa function of an added movement of the eject lever. As shown in Figs. 7and 8, an eject lever 89 is provided which corresponds in its locationand function to the lever 43 but which is of a two-part construction. Itcomprises two lever arms 91 and 92 in side by side relation, bothrotatably mounted on a common stud 93 corresponding to the stub shaft 45in the first considered form of the lever and its mounting. The leverarm 91 has a handle 94 at its upper end and has an elongated opening 95at its lower end through which the stub shaft 93 passes. The lever arm92 has a slot 96 in its upper end and a finger-like projection 97 spacedfrom the slot. The lever arm 91 has a projection 98 thereon engageablein the slot 96, there being a spring 99 tensioned between the partstending to maintain the position shown in Fig. 7 wherein the projection98 is seated in the slot 96. The parts are, in this position, lockedtogether for motion as a unit and the lever 89 becomes in effect asingle part operable like the lever 43 to operate a drive plate 101 forsweep feeding and to lift the platen.

The lever arm 91 may be moved in a longitudinal sense relatively to thelever arm 92 to dislodge the projection 98 from the slot 96 whereuponthe lever arm strip material to the next set of forms into writingposition, then a continued unitary advance of the lever to lift theplaten and finally a combined lifting and advancing motion of the handle94 resulting in actuation of the switch 104. A part of the latter motionmay comprise a rocking movement of the lever arm 92 in a clockwisedirection, as viewed, under the influence of spring 99. The effect,however, is that of relative motion of the lever arm 91 in the samedirection and as a part of the same actuating stroke by which the sweepfeed and platen lift functions have been obtained.

Actuation of the switch 104 is used to close an electrical circuitthrough a motor 105 which is attached by a bracket 106 to a framestructure 107 mounted on a rack or stand 108 and interconnectinglongitudinally extending side rails 109. In operation, the motor 105rotates a shaft 111 which through a gear train 112 and a one-way clutch113 has a driving connection with a spool 114 on which is wound ametallic tape 115. The tape 115 has an outer free end attached to acarbon carrier 116 which through rollers 117 has a sliding mounting 011the rails 109 and is still further mounted for lateral movement with thetypewriter carriage 16 through rollers 118 riding rails 119 on the rackor stand 108.

In response to advance of the record strip material over the platen, thecarbon carrier 116 is pulled forwardly or to the left as viewed in Fig.9. This motion unwinds the metallic tape 115 from the spool 114 andwithdraws an actuating finger 121 from engaged position with a normallyclosed microswitch 122. As shown in Fig. 11, the switches 104 and 122are arranged in series relation in an electrical circuit with the motor105. When the eject lever 89 is in a retracted or home position, theswitch 104, which is a normally open switch, remains open so that thecircuit through the motor 105 is open. The switch 122 also is held openat this time by the actuating finger 121 which is mounted on and rideswith the carbon carrier 116. As the carbon carrier advances, the finger121 moves away from the switch 122, allowing it to close but since theswitch 104 remains open, no energizing of the motor 105 results. Themotor 105 remains inactive as the eject lever is operated further toadvance the carbon carrier and to lift the platen. When, however, inthis succession of operations, the handle 94 of the eject lever islifted to displace the projection 98 from the slot 96, the ensuingrelative motion between the lever arms 91 and 92 results in closing ofthe switch 104 and a consequent closing of a circuit through the motor105, since the switch 122 still is closed at this time. In response torotation of the motor shaft 111, the spool 114 is rotated to rewind themetal tape 115 thereon and, in so doing, to retract the carbon carrier116. The retracting motion continues until the finger 121 reengages andactuates the switch 122, opening this switch and therefore discontinuingoperation of the motor. Arrival of the finger 121 in switch actuatingposition thus signals the arrival of the carbon carrier in fullyretracted position, and defines such position. It will be understoodthat in this position of the parts the carbon sheets 20 will have beenproperly and accurately readjusted ,with respect to the next succeedingset of forms, and the operator may now release the lever 89 for loweringof the platen and restoring of all the parts to normal. An adjustablestop may be provided on the frame 107 to positively define a limit ofreturn movement for the carrier 116.

From the above description it will be apparent that there is thusprovided a device of the character described possessing the particularfeatures of advantage before enumerated as desirable, but whichobviously is susceptible of modification in its form, proportions,detail construction and arrangement of parts Without departing from theprinciple involved or sacrificing any of its advantages.

While in order to comply with the statute the invention has beendescribed in language more or less specific as to structural features,it is to be understood that the invention is not limited to the specificfeatures shown, but that the means and construction herein disclosedcomprise but one of several modes of putting the inven-- tion intoeffect, and the invention is therefore claimed in any of its forms ormodifications Within the legitimate and valid scope of the appendedclaims.

Having thus described our invention, We claim:

1. In a typewriting or like machine, a carriage, a platen mounted onsaid carriage for relative rotary and bodily rocking motions, and ejectmeans including a hand operated lever operable in a part of its movementto rotate said platen and in another part of its movement subsequent tothe first said part to bodily rock said platen.

2. In a typewriting or like machine, a carriage, spaced apart armspivotally mounted on said carriage, a platen carried by and supportedbetween said arms for relative rotary motion, an eject lever mounted onsaid carriage for pivotal movement in to and fro strokes, a connectionbetween said lever and said platen for rotating said platen in responseto motion of said lever in one direction, means for limiting rotation ofsaid platen by said lever, said lever being movable beyond such point oflimitation in said same direction, and means operable by said lever inso moving for rocking said spaced apart arms.

3; In a typewriting or like machine, a carriage, a platen supported onsaid carriage for relative rotary and bodily shifting motions, anejector lever supported by said carriage for motion in actuating andreturn strokes, means utilizing a part of the actuating stroke of saidlever to rotate said platen, and means utilizing another and subsequentpart of said actuating stroke to bodily lift said platen.

4. A typewriting or like machine according to claim 3, characterized inthat said lever is effective in an initial part of its actuating stroketo rotate said platen and is effective in response to continued motionbeyond said initial part to lift said platen.

5. In a typewriting or like machine, a carriage, a platen supportedthereby for relative rotary and bodily lifting motions, means forguiding record strip material about said platen, said materialcomprising superposed strips of series connected detachable record formsand interposed strips of carbon, said strip material advancing over saidplaten in response to rotation of the platen, an eject lever operable torotate said platen in sweep feed fashion to advance from one record formto the next succeeding form, and means operable by said eject lever as apart of the same stroke by which said platen is rotated for lifting saidplaten to facilitate adjustment of said carbon.

6. A typewriting or like machine according to claim 5, characterized byother means operable by said lever for adjusting said carbon.

7. In a typewriting or like machine, a carriage, a platen supportedthereby for relative rotary and bodily lifting motions, means forguiding record strip material about said platen, said materialcomprising superposed strips of series connected detachable record formsand interleaved sheet transfer material, movable anchor means for saidtransfer material, said record strip material and said anchor meansadvancing in unison in response to rotation of said platen, said anchormeans being retractable to retract the transfer material relative to therecord forms for reuse, an eject lever pivotally mounted on saidcarriage and having an actuating stroke, and means operable by saideject lever during said actuating stroke for successively rotating saidplaten to bring a next succeeding record form into Writing position,lifting said platen and retracting said anchor means.

8. In a typewriting or like machine, a carriage, a platen supportedthereby for relative rotary and bodily lifting motion, means foradvancing record strip material over said platen in response to rotationthereof, said material including interleaved sheets of transfermaterial, anchor means for said transfer material advancing in unisonwith advance of the record strip material and retractable for reuse ofthe transfer material, an eject lever, means for effecting a sweepadvance of the record strip material upon operation of said lever, andmeans operable by said eject lever for retracting said anchor means.

9. A typewriting or like machine according to claim 8, characterized byother means operable by said eject lever for lifting said platen, theconstruction and arrangement of parts being such that said lever isoperable first to rotate said platen, then to lift said platen andfinally to retract said anchor means.

10. In a typewriting or like machine, a carriage, a platen supported bysaid carriage for relative rotary and bodily lifting motions, means forlifting said platen, means for rotating said platen, and a leverpivotally mounted on said carriage movable from a starting position toan intermediate position to operate said rotating means and movablethrough and beyond said intermediate position to operate said liftingmeans.

11. In a typewriting or like machine, a carriage, a platen in saidcarriage, pivotal arms in said carriage carrying said platen, arelatively stationary plate mounted on one of said arms, an eject leverpivotally mounted on said plate, and movable through actuating andreturn strokes, means for rotating said platen on the actuating strokeof said lever, a stop on said plate limiting relative movement of saidlever on said actuating stroke, and other lever means engageable by saideject lever concomitantly with engagement of said stop resolvingadditional thrust on said eject lever in the direction of the actuatingstroke into a force to lift said arms and thereby said platen.

12. In a typewriting or like machine, a carriage, platen supported insaid carriage for relative lifting motion for adjustment of carbonmaterial relatively to the platen, an anchor for carbon material spacedrearwardly of said carriage and movable toward and from said platen inadvancing and retracting motions, a hand operated eject lever on saidcarriage connected to said platen for sweep rotation thereof, meansresponsive to operation of said lever for retracting said anchor, andother means operable by said lever in a timed relation with theoperation of said retracting means for lifting said platen.

13. A typewriting or like machine according to claim 12, characterizedin that said lever is of two part construction, one of said parts beingmovable relatively to the other to operate said retracting means.

References Cited in the file of this patent UNITED STATES PATENTS1,425,293 Smith Aug. 8, 1922 2,275,782 Mann Mar. 10, 1942 2,626,695Schroder Jan. 27, 1953

